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Chap 40 Basic Animal Form and Function. Animal size and shape. Physical laws and environment constrain animal size and shape. Exchange with the environment. Bioenergetics. The flow of energy thorugh an animal
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Animal size and shape • Physical laws and environment constrain animal size and shape. • Exchange with the environment
Bioenergetics • The flow of energy thorugh an animal • Limits the animals behavior, growth, reproduction and determines how much food it needs. • Once energetic needs for “staying alive” are met, biosynthesis can take place.
metabolism • The amount of energy an animal uses over a given time period. • Aids in the quantification of an animals energy needs. • Related to its bioenergetic “strategy” • Body size directly affects an organiams metabolic rate.
Regulating and conforming • A regulator uses internal mechanisms to maintain homeostasis to the external. • A conformer allows its internal to fluxuate with a changing external. • All organism engage in both activities to some extent.
thermoregulation • Heat exchange occurs by 4 processes; conduction, convection, radiation and evaporation. • Insulation • Circulatory adaptations • Cooling • Behavior • Adjusting metabolic heat production